BAMF_CT2004

After driving around for a little bit and not running any o2 sensors Im going to hook up the pre-cat o2. (its running a little rich). I have the ors crossover. Im just wondering if there was a certain distance from the end of the crossover the the o2 should be placed. I was just wondering where people placed their o2 using a ors crossover or similar.

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Let me tell you what Melba Toast is packin' right here, all right. We got 4:11 Positrac outback, 750 double pumper, Edelbrock intake, bored over 30, 11 to 1 pop-up pistons, turbo-jet 390 horsepower. We're talkin' some muscle.

breknraj

I put mine in just before my down pipe starts to turn horizontal, and it seems to have worked, well. No codes from the front O2 sensor. The rear, behind two high flow cats, is a different story, however. I'm planning to put a URD simulator in there.

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Raj : 1960 Homo Sapien. 192cm, Blonde, Blue. Soon to lose spare tire.

Worf : 1990 SR5 Xtracab 4x4 5 speed, Inca Red Metallic. 3.4 converted, with Taco 5 spoke alloys, 275/65R16 BFG AT K/Os. Soon to add rear e-locker.

mt_goat

Here's where mine is, the 2nd one without the copper heatsink is the Toyota precat sensor. That flange bolts up to the ORS cross-over. Just make sure you don't position it anywhere near the 6:00 position because water will settle on it.

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Dale

"America is in a hole and it's getting deeper every day. We import 70% of our oil at a cost of $700 billion a year - four times the annual cost of the Iraq war." T. Boone Pickens
Check out the plan: http://www.pickensplan.com/index.php and http://www.cngnow.com/EN-US/Pages/default.aspx

mt_goat

So you're getting a P0420 with 2 cats huh?

__________________
Dale

"America is in a hole and it's getting deeper every day. We import 70% of our oil at a cost of $700 billion a year - four times the annual cost of the Iraq war." T. Boone Pickens
Check out the plan: http://www.pickensplan.com/index.php and http://www.cngnow.com/EN-US/Pages/default.aspx

BAMF_CT2004

Thanks guys I appreciate the info

__________________
Let me tell you what Melba Toast is packin' right here, all right. We got 4:11 Positrac outback, 750 double pumper, Edelbrock intake, bored over 30, 11 to 1 pop-up pistons, turbo-jet 390 horsepower. We're talkin' some muscle.

breknraj

Yeah, Dale, I'm planning to ditch the front cat (save it as a spare), and replace it with a flex coupling, to save my crossover, in the future.

I originally thought that having the two cat set up, similar to the factory scheme, would prevent the O2 sensor codes, but that has not been the case. So now I'll go with one cat and the URD simulator, to make the codes go away.

__________________
Raj : 1960 Homo Sapien. 192cm, Blonde, Blue. Soon to lose spare tire.

Worf : 1990 SR5 Xtracab 4x4 5 speed, Inca Red Metallic. 3.4 converted, with Taco 5 spoke alloys, 275/65R16 BFG AT K/Os. Soon to add rear e-locker.